61307216 has 20 divisors (see below), whose sum is σ = 118912032. Its totient is φ = 30620256.

The previous prime is 61307173. The next prime is 61307227. The reversal of 61307216 is 61270316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20471 + ... + 23273.

Almost surely, 2^61307216 is an apocalyptic number.

It is an amenable number.

61307216 is a deficient number, since it is larger than the sum of its proper divisors (57604816).

61307216 is a wasteful number, since it uses less digits than its factorization.

61307216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178 (or 4172 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 61307216 is about 7829.8924641402. The cubic root of 61307216 is about 394.3094616677.

The spelling of 61307216 in words is "sixty-one million, three hundred seven thousand, two hundred sixteen".